/*
 * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 */

package java.security.spec;

import java.math.BigInteger;
import java.security.spec.AlgorithmParameterSpec;

/**
 * This class specifies the set of parameters used to generate an RSA
 * key pair.
 *
 * @author Jan Luehe
 * @see java.security.KeyPairGenerator#initialize(java.security.spec.AlgorithmParameterSpec)
 * @since 1.3
 */

public class RSAKeyGenParameterSpec implements AlgorithmParameterSpec {

  private int keysize;
  private BigInteger publicExponent;

  /**
   * The public-exponent value F0 = 3.
   */
  public static final BigInteger F0 = BigInteger.valueOf(3);

  /**
   * The public exponent-value F4 = 65537.
   */
  public static final BigInteger F4 = BigInteger.valueOf(65537);

  /**
   * Constructs a new {@code RSAParameterSpec} object from the
   * given keysize and public-exponent value.
   *
   * @param keysize the modulus size (specified in number of bits)
   * @param publicExponent the public exponent
   */
  public RSAKeyGenParameterSpec(int keysize, BigInteger publicExponent) {
    this.keysize = keysize;
    this.publicExponent = publicExponent;
  }

  /**
   * Returns the keysize.
   *
   * @return the keysize.
   */
  public int getKeysize() {
    return keysize;
  }

  /**
   * Returns the public-exponent value.
   *
   * @return the public-exponent value.
   */
  public BigInteger getPublicExponent() {
    return publicExponent;
  }
}
